Hollamby, MJ and Aratsu, K and Pauw, BR and Rogers, SE and Smith, AJ and Yamauchi, M and Lin, X and Yagai, S (2016) Simultaneous SAXS and SANS Analysis for the Detection of Toroidal Supramolecular Polymers Composed of Noncovalent Supermacrocycles in Solution. Angew Chem Int Ed Engl, 55 (34). 9890 - 9893. ISSN 1521-3773

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Abstract

Molecular self-assembly primarily occurs in solution. To better understand this process, techniques capable of probing the solvated state are consequently required. Small-angle scattering (SAS) has a proven ability to detect and characterize solutions, but it is rarely applied to more complex assembly shapes. Here, small-angle X-ray and neutron scattering are applied to observe toroidal assemblies in solution. Combined analysis confirms that the toroids have a core-shell structure, with a π-conjugated core and an alkyl shell into which solvent penetrates. The dimensions determined by SAS agree well with those obtained by (dried-state) atomic force microscopy. Increasing the number of naphthalene units in the molecular building block yields greater rigidity, as evidenced by a larger toroid and a reduction in solvent penetration into the shell. The detailed structural analysis demonstrates the applicability of SAS to monitor complex solution-based self-assembly.

Item Type: Article
Additional Information: "This is the peer reviewed version of the following article: Simultaneous SAXS and SANS Analysis for the Detection of Toroidal Supramolecular Polymers Composed of Noncovalent Supermacrocycles in Solution, which has been published in final form at 10.1002/ange.201603370. This article may be used for non-commercial purposes in accordance With Wiley-VCH Terms and Conditions for self-archiving"
Subjects: Q Science > QD Chemistry
?? nanorings ??
?? self-assembly ??
?? small-angle scattering ??
?? supramolecular chemistry ??
?? toroids ??
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 22 Aug 2016 09:16
Last Modified: 07 Jul 2017 01:30
URI: http://eprints.keele.ac.uk/id/eprint/2123

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